NDLI: Repetitive interrogation of 2-level quantum systems

Content Provider	IEEE Xplore Digital Library
Author	Prestage, J.D. Chung, S.K.
Copyright Year	2010
Description	Author affiliation: Jet Propulsion Lab, California Institute of Technology, Pasadena, 91109-8099, USA (Prestage, J.D.; Chung, S.K.)
Abstract	Trapped ion clocks derive information from a reference atomic transition by repetitive interrogations of the same quantum system, either a single ion or ionized gas of many millions of ions. Atomic beam frequency standards, by contrast, measure reference atomic transitions in a continuously replenished “flow through” configuration where initial ensemble atomic coherence is zero. We will describe some issues and problems that can arise when atomic state selection and preparation of the quantum atomic system is not completed, that is, optical pumping has not fully relaxed the coherence and also not fully transferred atoms to the initial state. We present a simple two-level density matrix analysis showing how frequency shifts during the state-selection process can cause frequency shifts of the measured clock transition. Such considerations are very important when a low intensity lamp light source is used for state selection, where there is relatively weak relaxation and re-pumping of ions to an initial state and much weaker ‘environmental’ relaxation of the atomic coherence set-up in the atomic sample.
Starting Page	220
Ending Page	221
File Size	426534
Page Count	2
File Format	PDF
ISBN	9781424463992
ISSN	10756787
e-ISBN	9781424464012
DOI	10.1109/FREQ.2010.5556339
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atomic clocks Atomic measurements Frequency measurement Coherence Optical pumping Atom optics Microwave measurements
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Atomic clocks based on coherent population trapping: basic theoretical models and frequency stability

Spurious microwave fields in caesium atomic beam frequency standards: symmetry considerations and model calculations

The $^{87}Rb$ POP maser atomic clock

Spin squeezing in atomic systems

Laser-cooled Rb clocks

High-Power Maser Atomic Frequency Standards

Optical atomic clock measurements at the mHz level

Stability Measurements of the Ca and Yb Optical Frequency Standards

Optical Frequency Measurements using Fs- Comb Generators

Repetitive interrogation of 2-level quantum systems

Similar Documents

Atomic clocks based on coherent population trapping: basic theoretical models and frequency stability

Spurious microwave fields in caesium atomic beam frequency standards: symmetry considerations and model calculations

The $^{87}Rb$ POP maser atomic clock

Spin squeezing in atomic systems

Laser-cooled Rb clocks

High-Power Maser Atomic Frequency Standards

Optical atomic clock measurements at the mHz level

Stability Measurements of the Ca and Yb Optical Frequency Standards

Optical Frequency Measurements using Fs- Comb Generators

Repetitive interrogation of 2-level quantum systems